A numerical model of propagation of waves from complex-shape emitters in an inhomogeneous medium

• Published in: Optical memory & neural networks Vol. 19; no. 1; pp. 77 - 85
• Main Authors: Proskurin, D. K., Pechenkin, N. S., Zemtsov, A. V.
• Format: Journal Article
• Language: English
• Published: Heidelberg Allerton Press, Inc 01-03-2010
• Subjects: Complexity; Computer Science; Information Storage and Retrieval; Emitter Point; Inhomogeneous Medium; Bessel Beam; Optical Memory; Information Optic
• ISSN: 1060-992X; 1934-7898
• DOI: 10.3103/S1060992X1001011X

At present physical optics still calls for effective numerical solutions of diffraction problems. The main difficulty is a large amount of computation needed to perform integral conversions with rapidly oscillating cores. There are studies [1, 2] that offer effective algorithms of solving this kind of problems, yet these algorithms aim at determining amplitude-phase distributions in the detector’s plane only. The approach like that is barely suitable for computing the field at all points of the propagation medium between the emitter and detector. The necessity of such computations arises when one tries to model scattering of short waves on intricate-shape objects [3] in an inhomogeneous medium. The paper considers the application of algorithm [1] when visible light experiences scattering on plane triangular polygons in propagation through an inhomogeneous medium. The consideration of plane triangular apertures is important because of wide use of polygonal models for approximating real intricately shaped objects with a various degree of accuracy.